/* ── Painel de Navegação do Header com Layout do FAB ────────────────────── */
.header__overlay {
  position: fixed;
  inset: 0;
  z-index: 998;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.header__overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.header__panel {
  position: fixed;
  z-index: 999;
  top: 65px;
  left: var(--space-6);
  right: var(--space-6);

  /* ocupa a maior parte da tela */
  height: min(78vh, 720px);
  max-width: 980px;
  margin-left: auto;
  margin-right: auto;

  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);

  display: flex;
  flex-direction: column;
  overflow: hidden;

  /* animação suave */
  opacity: 0;
  transform: translateY(16px) scale(0.98);
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.header__panel.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* Header do painel */
.header__panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5);
  border-bottom: 1px solid var(--color-border);

  /* leve destaque sem alterar cores do tema */
  background: color-mix(in srgb, var(--color-surface) 92%, var(--color-primary) 8%);
}

.header__panel-heading {
  min-width: 0;
}

.header__panel-title {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  letter-spacing: -0.2px;
}

.header__panel-subtitle {
  margin: var(--space-2) 0 0 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Conteúdo rolável */
.header__panel-content {
  padding: var(--space-5);
  overflow: auto;
}

/* Seções por subsistema */
.header__panel-section + .header__panel-section {
  margin-top: var(--space-6);
}

.header__panel-section-title {
  margin: 0 0 var(--space-4) 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Grid de cards */
.header__nav-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.header__nav-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  text-decoration: none;
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  min-height: 72px;
}

.header__nav-card:hover {
  background: var(--color-hover-bg);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.header__nav-card:active {
  transform: translateY(0);
}

.header__nav-card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.header__nav-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
  flex-shrink: 0;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.header__nav-label {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
}

.header__nav-label-title {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.header__nav-label-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Acessibilidade: reduzir movimento */
@media (prefers-reduced-motion: reduce) {
  .header__overlay,
  .header__panel,
  .header__nav-card {
    transition: none !important;
    animation: none !important;
  }
}

/* ── Responsivo ────────────────────────────────────────────────── */
@media (max-width: 680px) {
  .header__nav-grid {
    grid-template-columns: 1fr;
  }

  .header__panel {
    left: var(--space-4);
    right: var(--space-4);
    height: min(86vh, 820px);
    border-radius: var(--radius-xl);
  }
}

@media (max-width: 480px) {
  .header__panel {
    left: 0;
    right: 0;
    top: 65px;
    height: calc(100vh - 65px);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  }
}

/* ── Filtro de busca no painel ────────────────────────────────────────────── */
.nav-filter-wrap {
  position: relative;
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.nav-filter-icon {
  position: absolute;
  left: calc(var(--space-6) + 0.6rem);
  color: var(--color-text-tertiary);
  pointer-events: none;
  width: 1rem;
  height: 1rem;
}

.nav-filter-input {
  width: 100%;
  padding: var(--space-2) var(--space-3) var(--space-2) 2rem;
  font-size: var(--font-size-sm);
  font-family: var(--font-family-base);
  color: var(--color-text-primary);
  background: var(--color-hover-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  outline: none;
}

.nav-filter-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.12);
  background: var(--color-surface);
}

.nav-filter-input::placeholder {
  color: var(--color-text-tertiary);
}

/* Cancel button nativo do input[type=search] */
.nav-filter-input::-webkit-search-cancel-button {
  cursor: pointer;
}

/* Estado vazio do painel */
.nav-empty {
  padding: var(--space-8) var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  text-align: center;
}